发明名称 |
FLOATING-POINT ADDER, SEMICONDUCTOR DEVICE, AND CONTROL METHOD FOR FLOATING-POINT ADDER |
摘要 |
An object of the invention is to speed up processing of adding floating-point numbers. A floating-point adder includes: a first register configured to store a first fixed-point number having a predetermined number of digits corresponding to a result of accumulation of a plurality of floating-point numbers; a first conversion unit configured to convert an input first floating-point number into a second fixed-point number having the predetermined number of digits; a second register configured to store the second fixed-point number; an adder configured to add the second fixed-point number stored in the second register and the first fixed-point number stored in the first register, and store a result of the addition in the first register as the first fixed-point number; and a second conversion unit configured to convert the first fixed-point number into a second floating-point number, and output the second floating-point number. |
申请公布号 |
US2016248439(A1) |
申请公布日期 |
2016.08.25 |
申请号 |
US201615012896 |
申请日期 |
2016.02.02 |
申请人 |
Renesas Electronics Corporation |
发明人 |
TANAKA Katsunori |
分类号 |
H03M7/24;G06F7/485 |
主分类号 |
H03M7/24 |
代理机构 |
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代理人 |
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主权项 |
1. A floating-point adder comprising:
a first register configured to store a first fixed-point number having a predetermined number of digits corresponding to a result of accumulation of a plurality of floating-point numbers; a first conversion unit configured to convert an input first floating-point number into a second fixed-point number having the predetermined number of digits; a second register configured to store the second fixed-point number; an adder configured to add the second fixed-point number stored in the second register and the first fixed-point number stored in the first register, and store a result of the addition in the first register as the first fixed-point number; and a second conversion unit configured to convert the first fixed-point number into a second floating-point number and output the second floating-point number. |
地址 |
Tokyo JP |